I run my Sasha’s with a Zesto audio Bia. l have had the speakers for about eight years and I’ve tried many amps on them including VTL 300’s AR ref 110’s and 150’s and several others. The Zesto even though it’s 60 W per side sounds far more powerful and has no problem controlling the bass. It’s tight and controlled with a really sweet mid range and treble. Great combination in my opinion and available used for well under 10 grand. I use a AR 5se and a AR cd8 for the source and the pre-BTW
Amplification for Wilson Audio Sasha on the cheap
What have you been driving your Sasha with and getting that low controlled huge bass.